Canon imagePRESS C1 Service Manual - page 407
Chapter 7
7-58
[6] Toner supply screw
[7] Developing assembly
[8] Sensor flag
[9] Toner retainer motor drive signal
[10] Toner retainer motor error detection signal
[11] Hopper motor drive signal
[12] Hopper motor error detection signal
[13] Hopper motor error detection signal
[14] Developing motor error detection signal
[15] Side driver PCB
M27 to M31: Toner retainer motor
M39 to M43: Hopper motor
CL1: Developing clutch
PS68 to PS72: Toner Supply Level Sensor
This machine has toner supply level sensors (PS68 to PS72) to perform accurate toner supply.
This sensor detects the sensor flag installed at the supply screw shaft. This flag is moved forth and back by the activation of the toner supply motor. When the flag
travels once, the supply screw rotates to supply the specified amount of toner into the developing assembly.
At toner supply, the side driver PCB monitors this sensor while activating the hopper motor. After toner supply is completed, the motor is stopped. Accurate toner
supply is completed by this step.
Related Error Code
E025-0101: Y toner retainer motor error
E025-0201: M toner retainer motor error
E025-0301: C toner retainer motor error
E025-0401: Bk toner retainer motor error
E025-0501: L toner retainer motor error
This error (overcurrent detection) occurs in the case that the power voltage of the toner retainer motor exceeds the specified value when supplying toner (while the
stirring plate is operated).
Related Error Code
E025-0102: Y hopper supply error
E025-0202: M hopper supply error
E025-0302: C hopper supply error
E025-0402: Bk hopper supply error
E025-0502: L hopper supply error
This error occurs in the case that the detection time for toner supply level sensor exceeds the specified value when supplying toner (while the toner feeding screw
is operated).
Related Error Code
E025-0103: Y toner retainer motor connection detection error
E025-0203: M toner retainer motor connection detection error
E025-0303: C toner retainer motor connection detection error
E025-0403: Bk toner retainer motor connection detection error
E025-0503: L toner retainer motor connection detection error
In the case of detecting that the connector of the toner retainer motor is disconnected.
Related Error Code
E025-0004: Hopper Shutter Error
In the case of supplying toner while the hopper shutter is closed
Related Error Code
E023-0001: Developing motor error
When the motor is detected as out of locking state for 1 sec or more after its stable rotation.
7.8.7 Toner Level Detection
0012-9297
imagePRESS C1 P / imagePRESS C1
This machine employs two different methods shown below to detect toner level of each color in the hopper assembly.
1. Video count detection
2. Piezo sensor detection
Toner level is detected at all times. When the amount of toner falls below a specified volume, the side driver PCB sends 2 types of message (Toner Low, Toner
Empty) to the main controller via the DC controller.
Below is a table showing how each message relates to toner level.
T-7-15
*1: The percentage indicates the toner level in the toner container.
*2: The percentage indicates the toner level in the toner path between the hopper assembly and the developing assembly.
If switching OFF/ON the knob on the toner container during the period between Toner Low 1 and Toner Low 2, the machine considers the toner container has been
replaced, and clears the toner level counter.
Message Type
Message Content
Toner level
Detector
Toner Low1
'Prepare a new toner cartridge.' (Printing can be continued.)
10% (See *1.)
Video count
Toner Low 2
'Replace the toner cartridge.'(Printing can be continued.)
0% (See *1.)
Piezo sensor
Toner Empty
‘Replace the toner container.’ (Printing cannot be continued.)
0% (See *2.)
Video count